Typhoons have unique structurally aligned points that leave a smoother finish than other types of tungsten carbide burs. Ideal for general shaping and sanding work on hard and soft wood, acrylic, die stone, plaster, hard rubber and fiberglass. Typhoon burs last longer and do not load as quickly. Max. speed 10,000 rpm. Made in USA Typhoon carbide bur in ball nose shape. 13/16" head dia. x 1-1/4" head length, 1/4" shank. Comes in fine and coarse grit Fine grit is blue Coarse grit is red